I have stubborn VM (Ubuntu 16.04 LTS) which randomly freezes about each 2 - 3
weeks at weekends (when load is close to zero).
No updates or kernel upgrades help.
Freeze is not detected by oVirt watchdog and VM is not automatically restarted.
Since it happens only on weekends, I suspect some weekly cron job may cause
Ubuntu 16.04 LTS is installed on qcow2 disk image (thin provision).
is it possible that fstrim (which discards / trims unused blocks) is a source
of this problem ?
Thanks in advance
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